CVE-2026-53143 remediation guide

Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11 The v11 MQD manager incorrectly assigned the CP-compute variants of checkpoint_mqd/restore_mqd for KFD_MQD_TYPE_SDMA queues. These functions use sizeof(struct v11_compute_mqd) (2048 bytes) instead of sizeof(struct v11_sdma_mqd) (512 bytes), causing a 1536-byte overflow. During CRIU checkpoint of an SDMA queue on Navi3x: - checkpoint_mqd() reads 2048 bytes from a 512-byte SDMA MQD buffer, leaking 1536 bytes of adjacent GTT memory to userspace During CR...

Open CVE record

ProductLinux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6

Affected versions>= cc009e613de6560eb499f8bc92c80a737752cb30 < 16dad1fb0d783a4008de30e32d0038c393de05b1, >= cc009e613de6560eb499f8bc92c80a737752cb30 < 2c5b66c9b4057b385566940935ebc32f6e6ebfd2, >= cc009e613de6560eb499f8bc92c80a737752cb30 < d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64, >= cc009e613de6560eb499f8bc92c80a737752cb30 < d02f05d30f35b036f7cbaf72de634affb5b38ec6, >= cc009e613de6560eb499f8bc92c80a737752cb30 < 352ea59028ea48a6fff77f19ae28f98f71946a80, >= 5.19, >= 5.19 < 6.6.143, >= 6.7 < 6.12.94, >= 6.13 < 6.18.36, >= 6.19 < 7.0.13, 7.1

Fixed versions6.6.143, 6.12.94, 6.18.36, 7.0.13

Priority basisReview · CVSS 7.8 · EPSS 0.14%

Identify the affected asset

Confirm whether Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 is installed, record the deployed version and installation path, and identify exposed interfaces.

Record the product name, package or appliance identifier, and installed version.
Identify internet-facing, administrative, API, and internal access paths.
Preserve the pre-change configuration and relevant service logs.

Validate the affected-version match

Compare the deployed version with the affected range: >= cc009e613de6560eb499f8bc92c80a737752cb30 < 16dad1fb0d783a4008de30e32d0038c393de05b1, >= cc009e613de6560eb499f8bc92c80a737752cb30 < 2c5b66c9b4057b385566940935ebc32f6e6ebfd2, >= cc009e613de6560eb499f8bc92c80a737752cb30 < d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64, >= cc009e613de6560eb499f8bc92c80a737752cb30 < d02f05d30f35b036f7cbaf72de634affb5b38ec6, >= cc009e613de6560eb499f8bc92c80a737752cb30 < 352ea59028ea48a6fff77f19ae28f98f71946a80, >= 5.19, >= 5.19 < 6.6.143, >= 6.7 < 6.12.94, >= 6.13 < 6.18.36, >= 6.19 < 7.0.13, 7.1. Treat incomplete inventory results as unresolved.

Prioritize with independent signals

The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

Apply supported remediation

Follow the vendor advisory or supported update path. Current fixed-version status: 6.6.143, 6.12.94, 6.18.36, 7.0.13. Preserve configuration and rollback material before change.

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

Confirm the expected version and package state.
Run a functional health check for critical service paths.
Review authentication, error, application, and security monitoring logs.
Reassess exposure if the supported fix cannot be applied.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.